Yb(NTf2)3/HFIP induced high isotacticity in atom transfer radical polymerization of methyl methacrylate

2018 ◽  
Vol 9 (38) ◽  
pp. 4711-4715 ◽  
Author(s):  
Sebastian Schaubach ◽  
Xiao-Yan Wang ◽  
Jun-Fang Li ◽  
Xiu-Li Sun ◽  
Sunewang R. Wang ◽  
...  
Keyword(s):  
Methyl Methacrylate ◽  
Atom Transfer Radical Polymerization ◽  
Radical Polymerization ◽  
Lewis Acid ◽  
Atom Transfer ◽  
Highly Efficient

Highly efficient Lewis acid Yb(NTf2)3 (1–8 mol%) for a high triad isotacticity (up to 69%) in bisoxazoline/copper mediated ATRP of MMA in HFIP is described.

Atom Transfer Radical Polymerization of Methyl Methacrylate Initiated by Alkyl Bromide and 2-Pyridinecarbaldehyde Imine Copper(I) Complexes

1997 ◽  
Vol 30 (7) ◽  
pp. 2190-2193 ◽  
Author(s):  
David M. Haddleton ◽  
Christina B. Jasieczek ◽  
Michael J. Hannon ◽  
Andrew J. Shooter
Keyword(s):  
Methyl Methacrylate ◽  
Atom Transfer Radical Polymerization ◽  
Radical Polymerization ◽  
Atom Transfer ◽  
Alkyl Bromide

scholarly journals Synthesis of Poly(methyl methacrylate)-b-poly(N-isopropylacrylamide) Block Copolymer by Redox Polymerization and Atom Transfer Radical Polymerization

2018 ◽  
Vol 18 (3) ◽  
pp. 537 ◽  
Author(s):  
Melahat Göktaş ◽  
Guodong Deng
Keyword(s):  
Block Copolymers ◽  
Methyl Methacrylate ◽  
Atom Transfer Radical Polymerization ◽  
Radical Polymerization ◽  
Gel Permeation Chromatography ◽  
High Yield ◽  
Resonance Spectroscopy ◽  
Atom Transfer ◽  
Poly Methyl Methacrylate ◽  
Redox Polymerization

Poly(methyl methacrylate)-b-poly(N-isopropylacrylamide) [PMMA-b-PNIPAM] block copolymers were obtained by a combination of redox polymerization and atom transfer radical polymerization (ATRP) methods in two steps. For this purpose, PMMA macroinitator (ATRP-macroinitiator) was synthesized by redox polymerization of methyl methacrylate and 3-bromo-1-propanol using Ce(NH4)2(NO3)6 as a catalyst. The synthesis of PMMA-b-PNIPAM block copolymers was carried out by means of ATRP of ATRP-macroinitiator and NIPAM at 60 °C. The block copolymers were obtained in high yield and high molecular weight. The characterization of products was accomplished by using multi instruments and methods such as nuclear magnetic resonance spectroscopy, Fourier transform infrared spectroscopy, gel permeation chromatography, and thermogravimetric analysis.

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